Inner tube of a core barrel



FIG. 1 is a perspective view of an inner tube of a core barrel;

FIG. 2 is a top plan view of the inner tube of a core barrel shown inFIG. 1;

FIG. 3 is a front elevation view of the inner tube of a core barrelshown in FIG. 1;

FIG. 4 is a rear elevation view of the inner tube of a core barrel shownin FIG. 1;

FIG. 5 is a perspective view of a first variant of the inner tube of acore barrel;

FIG. 6 is a top plan view of the variant of the inner tube of a corebarrel shown in FIG. 5;

FIG. 7 is a front elevation view of the variant of the inner tube of acore barrel shown in FIG. 5; and,

FIG. 8 is a rear elevation view of the variant of the inner tube of acore barrel shown in FIG. 5.

CLAIM I claim the ornamental design for an inner tube of a core barrel,as shown and described.